GREGORY VASSILEV (MD) – Pain Medicine (Anesthesiology) Physician, NPI 1073539748
Pain Medicine (Anesthesiology) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
928 PAIN MANAGEMENT in CA
Provider Addresses for GREGORY VASSILEV (MD)
4929 Van Nuys Blvd
Sherman Oaks, CA 914031702
Phone: (818) 981-7111
Type: Location
5767 W CENTURY BLVD STE 400
LOS ANGELES, CA 900455631
Phone:
Type: Mailing
6815 NOBLE AVE
VAN NUYS, CA 914053796
Phone: (818) 901-6600
Type: Location
Orange Post Office, 222-224, Summer Street, Orange, Orange City Council, New South Wales, 2800, Australia
ORANGE, CA 928635486
Phone: (818) 550-0900
Fax: (505) 293-1524
Type: Mailing
Sherman Oaks Hospital, 4929, Van Nuys Boulevard, Sherman Oaks, Los Angeles, Los Angeles County, California, 91403, United States
SHERMAN OAKS, CA 914031702
Phone: (818) 981-7111
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 90 Open Payments records for all available years, with a total value of $2,490.
Total Amount is formed as General ($2,490) + Research ($0) + Ownership ($0) = $2,490.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: Medtronic, Inc. ($1,680).
Total Amount
$2,490
General + Research + Ownership
Payments
90
Total payment records
General Amount
$2,490
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $1,680 |
| Collegium Pharmaceutical, Inc. | $487 |
| Amgen Inc. | $110 |
| SPR Therapeutics, Inc | $73 |
| Saluda Medical Americas, Inc. | $48 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-03-12
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040312000343 | I | Pain Management | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 1,119 | 223 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 145 | 145 | $0 |
| 64483 | Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level | 107 | 87 | $0 |
| 64484 | Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level | 80 | 66 | $0 |
| 64493 | Injection of lower or sacral spine facet joint using imaging guidance, single level | 33 | 26 | $0 |
Insurance plans in this area (ZIP 91403)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Orthopedic Surgery | NJ | |
| Orthopedic Surgery | CA | |
| Orthopedic Surgery | CA | |
| - | CA | |
| Physical Therapist In Private Practice | CA | |
| Physician Assistant | CA | |
| Hand Surgery | CA | |
| Nurse Practitioner | CA | |
| Orthopedic Surgery | CA | |
| - | CA |
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